Multiple Choice
The geologic time scale is often subdivided on the basis of ____.
A) the appearance of different radioactive isotopes in different strata
B) levels of background extinction
C) periods of extensive environmental change
D) the appearance of new species
E) climate change
Correct Answer:
Verified
Correct Answer:
Verified
Q24: The nineteenth-century naturalists tried to reconcile traditional
Q25: The idea that the same geologic processes,occurring
Q26: _ are examples of trace fossils. <br>A)
Q27: The supercontinent Pangea _. <br>A) existed over
Q28: No convincing fossil evidence exists for _.
Q30: Most fossils _. <br>A) are found in
Q31: Darwin's exposure to Lyell gave him insight
Q32: Select the most appropriate choice for each
Q33: The most important evidence that Darwin used
Q34: Select the most appropriate choice for each